Boring machine



H. M. TUCKER.

I BORING MACHINE.

APPLICATION FILED APR. 2, 1921.

PatentedSept. 26

3 SHEETSSHEET l.

gwuenlo'o H/ITucK er:

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H. M. TUCKER.

80mm; MACHINE. APPLICATION FILED APR. 2, I921. 1 ,430,339, PatentedSept. 26, 1922.

3 SHEETS-SHEET 2- H. M. TUCKER.

BORING MACHINE. APPLICATION FILED APR..2, [92L Patenteasept. 26, 1922.

3 SHEETS-SHEET 3.

Patented $ept. 26, 1922,

Tara s HILRY M. TUCKER, OF FORTWORTH, TEXAS.v

wane? Beams naonrnn),

' Application filed. April '2,

To all whom it may concern: a

Be it known that I, HrLnr M., TUCKER, a citizen of the United States,- re siding at Fort Worth, in the county of Tarrant and State of Texas, have invented new and lusefu'l'lmprovements in Boring Machines,' ofwhich the following is a specification; 1 V

The object of my present invention is. the provision of a simple and highly efficientportable machine for boringt and cutting stumps with a view to the expeditious removalof the major portions of the stumps from the ground. i

'Tothe attainment of the foregoing, the invention consists in the improvement as hereinafter described and definitely claimed. in the accompanying drawings, forming part of this specification:

Figure]. is a side elevation of a machine constructed in accordance with my invention. v Figure 2 is a top plan view of the same. Figure 3 is a rear end elevation of the machine." v

Figure 4 is a top plan view of a modified machine hereinafter explicitly referred to.

Figure 5 is anenlarged fragmentary view showing the lower section of the rockable casing and the driving connections of-the battery of augers.

Figure 6 is a cross-section on the line .6-6 of Figure 5.

Figure 7iisian enlarged horizontal section through the yoke and several augers in the plane indicated by the line 7--7 ofFigure 1.

' Figure 8 is an enlarged fragmentary view showing the manner of connecting .1 the au ers with the handle.

imilar numerals designate vcorresponding parts in'Figures 1-3 and 5 8 to which refer ence will first be made.

Among other elements my novel machine comprises a body 1. This body '1 is prefer} ably,'though not necessarily, equipped with wheels '2 and is adapted to be drawn'o'r otherwise moved from stump to stump.

Fixed to andrising from the body 1 are standards 3,and journaled and held-against endwise movement in said standards is a longitudinal shaft 4: in which is a longitudi- 1921. Serial No. 457,983.

nal key-way 5. At its rear end the said shaft-4 is connected with the drive shaft 6 of an internal combustion motor 7 which is mounted on the rear'portion'of the body-1 and provided with an oil tank 8, a tank 9 for cooling water','fflan'd the other appurtenances of'a'n' internalcombustion motor.

7 Receiving and supported by the shaft 1 isa .casingmadeup vof alower section 10 and an upper section 11 bolted to, orgotherwise connected with the section 10., vKeyed 0n the shaft 4 and spaced apart in the easing referred'to by sleeves 12, Figurefi, are

worm gears 18, and also arranged in the 1 illustrated, "Figure 1, and each shaft '15 is v provided at its lowerend with a chuck 20 to receive and hold the upper end of an auger; the augers of the shortshafts 15 being numbered 21, and the angers of the long shafts 15 being numbered 22. At 23 is a tworpart yoke that connects thebattery of shafts 15 ,andaugers 21 and 22,,ai'1'd is adapted to be movedv do wnwardly and upwardly with said'batte'ry." By comparison of Figures 1 and 7 it will-be understood 7 that the 'yoke28receives the lower portions ofthe long shafts 15 and also receives reduced intermediate portionsi24e of the augers 21 on the short shafts 15; also, that upright anti efriction rollers 25 are carried in the yoke23 and surround the long shafts 15 and the said reduced portions 2% 'ofthe angers '21 on the short shafts15. It will be further noted byparticular reference to Figure 7 that the augcrs 21 on the short shafts "15 overhang the contiguous "portions of adice joining angers 22 and consequently the bat tery of angers 21 and 22 is adapted to ma re a cut in a stump much larger than the yoke 28 and through which said yoke 23 can be freely moved downwardly and upwardly. The relative arrangement of the lower augers 22 and the upper augers 21 as described is also advantageous inasmuch as it enables theupper angers 21 to cut and remove the stump portions left bv the lower angers The casin made up of tie connected sections 10 and '11 is preferably oil-tight so as to enable the intermeshed gears 13 and it to rest and work in oil or grease, and appro priate washers in the form of flanged sleeves 30, Figure 5, are interposed between the sections 10 and 11, on the one hand, and the shaft i, on the other, with a view to preyenting leakage of lubricant from the eas- 111 %y lateral push or pull exerted on the handle 17, the shafts 15 together with the casing and the gears 14 are adapted to be swung as a unit on the shaft 4 so that'the battery of angers can be swung from the pendent position shown by full lines in Fig ure 3 to that shown by dotted lines in said figure, and vice versa.

The practical operation of my novel ma chine will be readily understood by reference to Figure 1 when it is stated that the machine is first positioned at one side of a stump l0 to make a diagonal out 4-1 there in, and is then positioned at the opposite side of the stump to make a diagonal cut 42 therein, after the manner illustrated by dotted lines in said figure. inasmuch as each of the outs referred to is two and a half or three feet long; and the cuts ll and 42 intersect each other at the point 48, it follows that the upper portion of the stump above and below the ground will be segregated from the lowermost portion of the stump and divided into three parts all of which may be readily removed.

In the modification shown in Figure l the wheeled body l is adapted to be connected through a draw-bar 50 with a tractor (not shown) for moving the machine, and the shaft P of the machine is connected through inter-meshed miter gears 51 with a shaft 52 on which is a pulley 53 to re ceive a driving elt (also not shown) from the tractor. With the exception that its shaft 4 is driven in the manner indicated which obviates the necessity of equipping it with a motor such as 7 in Figures 18, the embodiment shown. in Figure L is similar to that shown in the other figures and is possessed of all of the practical advan tages ascribed to the latter.

.llt will be understood that in both einbodiments of my invention the casing and its appurtenances are capable of being moved as a unit in the direction of the length of the shaft 4 or i; also, that the shafts of the angers 21 are provided above said angers 21 with conveyors 21 designed and adapted to remove the cuttings.

l have entered into a detail description of the construction and relative arrangement of parts embraced in the present and preferred embodiments of my invention in order to impart a full, clear and exact understanding of the said embodiments, I do not desire, however, to be understood as confining myself to the said specific construction and relative arrangement of parts inasmuch as in the future practice of the invention changes and modifications may be made such as fall within the scope of my invention asdefined inmy appended claims.

Having described'my invention, what 1 claim and desire to secure by lhetters Patent, is

1, in a boring and cutting machine, the combination of a support, a shaft mounted in bearings thereon, worm gears mounted on the shaft to turn therewith and be capable of movement longitudinally of the shaft, a casing mounted on the shaft and capable of lon itudinal movement thereon, a battery of shafts extending through the casing and adapted to rotate and move endwise in the casing, means connecting the said shafts of the battery, worm gears keyed to the shafts of the battery, and through which the said shafts are endwise movable, said worm: gears being arranged in the casing and intermeshed with the first-named worm gears,

and angers carried by the forward portions of the shafts of the battery.

in a boring and cutting machine, the combination of a support, a shaft mounted in bearings thereon, worm gears mounted on the shaft to turn therewith and be capable of movement longitudinally of the shaft, a casing mounted on the shaft and capable of longitudinal movement thereon, a battery of shafts extending through the casingand adapted to rotate and move endwise in the casing, means connecting the said shafts of the battery, worm gears keyed to the shafts of the battery and through which the said shafts are endwise movable, said worm gears being arranged in the casing and inter meshed with the first-named worm gears, angers carried by the forward portions of the shafts of the battery, the alternate angers in rear of the other angers, and a yoke in which the shafts of the forward angers together with the rear angers are journaled, said yoke embracing the shanks or reduced portions of all of the angers but the rear angers having vanes in rear of the-reduced portions embraced by the yokes.

8. In a boring and cutting machine, the combination of supporting means, a therein, worm gears on. the shaft and ratetable thereby, means rockable on the shaft, ing intermeshed with the first-named gears,

a battery of shafts rotatable and movable means connecting the shafts of the battery, endwise in said rockable means and rockaand angers carried by the forward portions 10 ble therewith, worm gears keyed to the of said battery shafts.

shafts of the battery and carried by the In testimony whereof, I afiix my signarockable means and through which the said ture.

shafts are endwise movable, said gears be- HILRY M. TUCKER. 

